On Tue, Feb 27, 2018 at 06:07:46PM +0800, Ming Lei wrote: > This patch can support to partition host-wide tags to multiple hw queues, > so each hw queue related data structures(tags, hctx) can be accessed in > NUMA locality way, for example, the hw queue can be per NUMA node. > > It is observed IOPS can be improved much in this way on null_blk test.
null_blk isn't too interesting, so some real hardware number would be very useful here. Also the documentation should be a lot less sparse. When are we going to set this flag? What help are we going to give driver authors to guide chosing the option?